CN210292427U - Mine waste heat soil source hybrid heat pump system - Google Patents
Mine waste heat soil source hybrid heat pump system Download PDFInfo
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- CN210292427U CN210292427U CN201920911313.0U CN201920911313U CN210292427U CN 210292427 U CN210292427 U CN 210292427U CN 201920911313 U CN201920911313 U CN 201920911313U CN 210292427 U CN210292427 U CN 210292427U
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- 239000002918 waste heat Substances 0.000 title claims abstract description 82
- 239000002689 soil Substances 0.000 title claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 238000009423 ventilation Methods 0.000 claims abstract description 16
- 238000005057 refrigeration Methods 0.000 claims description 74
- 239000012530 fluid Substances 0.000 claims description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000010438 heat treatment Methods 0.000 claims description 34
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000005065 mining Methods 0.000 abstract description 18
- 238000003912 environmental pollution Methods 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The utility model discloses a mine used heat soil source hybrid heat pump system, including earth's surface mine used heat utilization return circuit, ground heat exchanger and deep well used heat collection return circuit, deep well used heat collection return circuit is connected with ground heat exchanger and deep well used heat collection return circuit is used for retrieving the waste heat in the pit and gives ground heat exchanger with the waste heat transfer in the pit, ground heat exchanger with earth's surface mine used heat utilization return circuit connection just is used for absorbing the energy transfer that the ground heat exchanger stored and gives earth's surface mine used heat utilization return circuit, deep well used heat collection return circuit include high-low pressure heat exchanger and mine ventilation system. The utility model discloses utilize the heat pump technique, store the low-grade heat energy in the earth's surface in the pit, draw out again when needing, reduced the long-term heat supply in winter of the traditional mining area in cold area in the north of china's environmental pollution and the consumption of large-scale non renewable resources that cause, saved the energy consumption that is used for the working face cooling in the pit of traditional mine, had good economic benefits.
Description
Technical Field
The utility model belongs to the technical field of mine waste heat utilization, specifically relate to a mine waste heat soil source hybrid heat pump system.
Background
Most of the mining areas in China are located in the northern areas, and the climate is cold. The system needs heating in winter and cooling in summer, the heating period is nearly half a year, the heat load is larger in winter, the hot water load is larger than that of a common building due to the working property of a mining area, and the traditional system uses coal, gas or electric energy for heating and supplying hot water, so that the energy consumption is large and the cost is high.
In the process of coal mining, a large amount of waste heat can be generated in a mine mining area, in order to ensure the mining area environment, the waste heat generated in the mining area is blown out of the mining area by a mine ventilation system in the traditional mining area, so that the waste heat resource is not utilized, and the waste heat resource is lost in the external environment, thereby not only causing the waste of the resource, but also causing serious thermal pollution, dust pollution and noise pollution. The existing mine waste heat utilization directly collects underground waste heat and then exchanges heat with ground heat load, heat of a mining area is still wasted in summer, heat can be supplied only in winter, and heat supply cannot be adjusted timely along with the change of ground temperature.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the above-mentioned prior art, provide a mine used heat soil source hybrid heat pump system, it utilizes heat pump technology, when guaranteeing that stope working face operational environment temperature is suitable, stores the heat energy of low-grade in the pit in the earth's surface, draws out when needing again, has reduced the environmental pollution and the large-scale non renewable resource's of the long-term heat supply in winter of the traditional mining area in cold area in the north of china consumption that causes.
In order to achieve the above object, the utility model adopts the following technical scheme: a mine waste heat and soil source mixed heat pump system is characterized by comprising an earth surface mine waste heat utilization loop, a ground heat exchanger and a deep well waste heat collection loop, wherein the deep well waste heat collection loop is connected with the ground heat exchanger and used for recovering underground waste heat and transmitting the underground waste heat to the ground heat exchanger, the ground heat exchanger is connected with the earth surface mine waste heat utilization loop and used for transmitting energy absorbed and stored by the ground heat exchanger to the earth surface mine waste heat utilization loop, the deep well waste heat collection loop comprises a high-pressure heat exchanger and a low-pressure heat exchanger, the high-pressure heat exchanger and the low-pressure heat exchanger are arranged at the tail end of a mine ventilation system and used for absorbing the underground waste heat from a stope zone in the mine ventilation system, a cold fluid inlet of the high-pressure heat exchanger and a cold fluid outlet of the ground heat exchanger are communicated, and a cold fluid outlet of the high-low pressure heat exchanger is communicated with a first fluid inlet of the buried pipe heat exchanger, and a second fluid inlet and an outlet of the ground buried pipe heat exchanger are communicated with an earth surface mine waste heat utilization loop.
The mine waste heat soil source hybrid heat pump system is characterized in that: a fifth circulating pump, a sixth valve and a three-way reversing valve are arranged between a second fluid outlet of the ground heat exchanger and the ground mine waste heat utilization loop, an outlet of the fifth circulating pump is communicated with one end of the sixth valve, one end of the sixth valve is communicated with a first port of the three-way reversing valve, a second port and a third port of the three-way reversing valve are both communicated with the ground mine waste heat utilization loop, and an inlet of the fifth circulating pump is communicated with a second fluid outlet of the ground heat exchanger.
The mine waste heat soil source hybrid heat pump system is characterized in that: a first valve and a first circulating pump are further arranged between a cold fluid inlet of the high-low pressure heat exchanger and a first fluid outlet of the ground heat exchanger, one end of the first valve is communicated with the first fluid outlet of the ground heat exchanger through a pipeline, the other end of the first valve is communicated with an inlet of the first circulating pump, and an outlet of the first circulating pump is communicated with a cold fluid inlet of the high-low pressure heat exchanger.
The mine waste heat soil source hybrid heat pump system is characterized in that: the ground surface mine waste heat utilization loop comprises a heat pump unit and a refrigeration loop, the heat pump unit comprises a heat pump unit compressor, a heat pump unit evaporator, a heat pump unit throttling mechanism and a heat pump unit condenser, an outlet of the heat pump unit compressor is communicated with a working medium inlet of the heat pump unit evaporator, a working medium outlet of the heat pump unit evaporator is communicated with an inlet of the heat pump unit throttling mechanism, an outlet of the heat pump unit throttling mechanism is communicated with a working medium inlet of the heat pump unit condenser, and a working medium outlet of the heat pump unit condenser is communicated with an inlet of the heat pump unit compressor; the refrigeration loop comprises a refrigeration loop compressor, a refrigeration loop evaporator, a refrigeration loop throttling device, a refrigeration loop condenser and a cold load, wherein an outlet of the refrigeration loop compressor is communicated with a working medium inlet of the refrigeration loop evaporator, a working medium outlet of the refrigeration loop evaporator is communicated with an inlet of the refrigeration loop throttling device, an outlet of the refrigeration loop throttling device is communicated with a working medium inlet of the refrigeration loop condenser, a working medium outlet of the refrigeration loop condenser is communicated with an inlet of the refrigeration loop compressor, one end of the cold load is communicated with a load medium inlet of the refrigeration loop evaporator, and the other end of the cold load is communicated with a load medium outlet of the refrigeration loop evaporator; the load medium outlet of the heat pump unit evaporator is communicated with the load medium inlet of the refrigeration loop condenser, the load medium inlet of the heat pump unit evaporator is communicated with the load medium outlet of the refrigeration loop condenser, the load medium outlet of the heat pump unit condenser is communicated with the second fluid inlet of the ground heat exchanger, and the load medium inlet of the heat pump unit condenser is communicated with the second fluid outlet of the ground heat exchanger.
The mine waste heat soil source hybrid heat pump system is characterized in that: the ground surface mine waste heat utilization loop further comprises a heating loop, the heating loop comprises a second circulating pump, a second valve, a heat load and a third valve, an outlet of the second circulating pump is communicated with one end of the second valve, the other end of the second valve is communicated with one end of the heat load, the other end of the heat load is communicated with one end of the third valve, the other end of the third valve is communicated with a load medium inlet of a condenser of a heat pump unit, a load medium outlet of the condenser of the heat pump unit is communicated with an inlet of the second circulating pump, a load medium outlet of an evaporator of the heat pump unit is communicated with a second fluid inlet of the buried pipe heat exchanger, and a load medium inlet of the evaporator of the heat pump unit is communicated with a second fluid outlet of the buried pipe heat exchanger.
The mine waste heat soil source hybrid heat pump system is characterized in that: the ground surface mine waste heat utilization loop further comprises a domestic hot water loop, the domestic hot water loop comprises a hot water heating load, a third circulating pump and a fourth valve, an outlet of the third circulating pump is communicated with one end of the fourth valve, the other end of the fourth valve is communicated with a load medium inlet of a condenser of the heat pump unit, a load medium outlet of the condenser of the heat pump unit is communicated with one end of the hot water heating load, the other end of the hot water heating load is communicated with an inlet of the third circulating pump, a load medium outlet of an evaporator of the heat pump unit is communicated with a second fluid inlet of the buried pipe heat exchanger, and a load medium inlet of the evaporator of the heat pump unit is communicated with a second fluid outlet of the buried pipe heat exchanger.
The mine waste heat soil source hybrid heat pump system is characterized in that: the heat pump unit further comprises a cooling tower, a water outlet of the cooling tower is communicated with a load medium inlet of a condenser of the heat pump unit, and a load medium outlet of the condenser of the heat pump unit is communicated with a water inlet of the cooling tower.
The mine waste heat soil source hybrid heat pump system is characterized in that: and a fourth circulating pump and a fifth valve are arranged between the load medium outlet of the condenser of the heat pump unit and the water inlet of the cooling tower, the outlet of the fourth circulating pump is communicated with one end of the fifth valve, the other end of the fifth valve is communicated with the water inlet of the cooling tower, and the inlet of the fourth circulating pump is communicated with the load medium outlet of the condenser of the heat pump unit.
The mine waste heat soil source hybrid heat pump system is characterized in that: a sixth circulating pump and a seventh valve are further arranged between one end of the cold load and the load medium inlet of the refrigeration loop evaporator, the outlet of the sixth circulating pump is communicated with one end of the seventh valve, the other end of the seventh valve is communicated with the load medium inlet of the refrigeration loop evaporator, and one end of the cold load is communicated with the inlet of the sixth circulating pump.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses be provided with the ground heat exchanger and can store the heat energy of low grade in the pit in the earth's surface between earth's surface mine used heat utilization return circuit and deep well used heat collection return circuit, extract again when needing, reduced the long-term heat supply in winter of the traditional mining area in the cold area in the north of china's environmental pollution and the consumption of large-scale non renewable resources that cause.
2. The utility model discloses can be effectively with the temperature of deep well working face fall to standard operating temperature, improve operational environment, add the hot water supply system, improve the quality of life, exempt from because of improving the life of miner and operational environment and the expense of extra cost, have very big economic benefits.
3. The utility model discloses a system utilizes deep well used heat to improve thermal utilization ratio, and the system all can be prepared hot water and can be used to the indoor terminal regulation of building in winter and summer simultaneously, and the heating season can heat supply, and non-heating season can refrigerate.
4. The utility model discloses a thermal loss and the not high problem of utilization ratio and the thermal shortage of severe cold district heating season of traditional mining area have been solved to this kind of system, and the non-renewable resources are practiced thrift to make full use of used heat, have embodied sustainable development's air conditioner theory.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a system connection schematic diagram of the mine waste heat soil source hybrid heat pump system of the present invention.
Fig. 2 is a schematic view of the connection between the heat pump unit and the refrigeration circuit of the present invention.
Fig. 3 is a schematic view of the connection between the heat pump unit and the heating loop.
Fig. 4 is a schematic view of the connection between the heat pump unit and the domestic hot water loop.
Fig. 5 is a schematic view of the connection between the heat pump unit and the ground heat exchanger.
Description of reference numerals:
1-a ground heat exchanger; 1-fifth circulating pump; 1-2-sixth valve;
1-3-three-way reversing valve; 2-high and low pressure heat exchanger; 3-mine ventilation system;
3-1, a fan 3-2, a sampling area 4 and a first valve;
5-a first circulation pump; 6-heat pump set;
6-1-heat pump set compressor; 6-2-heat pump set evaporator;
6-3-heat pump set throttling mechanism; 6-4-condenser of heat pump set;
6-5-cooling tower; 6-fourth circulating pump; 6-7-fifth valve;
7-a refrigeration circuit; 7-1-refrigeration circuit compressor;
7-2-refrigeration loop evaporator; 7-3-a refrigeration circuit throttling device;
7-4-a refrigeration circuit condenser; 7-5-cold load;
7-6-sixth circulation pump; 7-seventh valve; 8-heating loop;
8-1-second circulation pump; 8-2 — a second valve; 8-3-thermal load;
8-4-third valve; 9-domestic hot water loop; 9-1-hot water heating load;
9-2-third circulation pump; 9-3-fourth valve.
Detailed Description
As shown in fig. 1, the utility model discloses a ground surface mine waste heat utilization return circuit, ground heat exchanger 1 and deep well waste heat collection return circuit, deep well waste heat collection return circuit is connected with ground heat exchanger 1 and deep well waste heat collection return circuit is used for retrieving underground waste heat and transmits underground waste heat to ground heat exchanger 1, ground heat exchanger 1 with ground surface mine waste heat utilization return circuit is connected and is used for transmitting the energy that ground heat exchanger 1 absorbed and stored to ground heat utilization return circuit, deep well waste heat collection return circuit includes high-low pressure heat exchanger 2 and mine ventilation system 3, high-low pressure heat exchanger 2 sets up at the end of mine ventilation system 3 and is used for absorbing the underground waste heat that the air came from the stope zone in the mine ventilation system 3, the cold fluid entry of high-low pressure heat exchanger 2 is linked together with the first fluid export of ground heat exchanger 1, and a cold fluid outlet of the high-low pressure heat exchanger 2 is communicated with a first fluid inlet of the buried pipe heat exchanger 1, and a second fluid inlet and an outlet of the ground buried pipe heat exchanger 1 are both communicated with an earth surface mine waste heat utilization loop.
In the embodiment, the mine ventilation system 3 is mainly used for providing enough fresh air for the underground and adjusting underground climate, fresh air is blown to a stope area 3-2 through a fan 3-1, waste heat generated by the stope area 3-2 is brought to a high-low pressure heat exchanger 2 arranged at the tail end of the mine ventilation system 3 by the air along the mine ventilation system 3, the air carrying mine waste heat in the high-low pressure heat exchanger 2 exchanges heat with cold fluid in the high-low pressure heat exchanger 2, the cold fluid of the high-low pressure heat exchanger 2 transfers absorbed heat to an underground pipe heat exchanger 1, the underground pipe heat exchanger 1 can store the low-grade heat energy in the underground mine on the ground, and the low-grade heat energy can be extracted and supplied to an underground mine waste heat utilization loop when needed. The waste heat resources of the mine are fully utilized, and the environmental pollution caused by long-term heat supply in winter in the traditional mining area in the northern cold area of China and the consumption of large-scale non-renewable resources are reduced.
As shown in fig. 1 and 5, a fifth circulating pump 1-1, a sixth valve 1-2 and a three-way reversing valve 1-3 are arranged between the second fluid outlet of the ground heat exchanger 1 and the waste heat utilization loop of the ground mine, the outlet of the fifth circulating pump 1-1 is communicated with one end of the sixth valve 1-2, one end of the sixth valve 1-2 is communicated with the first port of the three-way reversing valve 1-3, the second port and the third port of the three-way reversing valve 1-3 are both communicated with the waste heat utilization loop of the ground mine, and the inlet of the fifth circulating pump 1-1 is communicated with the second fluid outlet of the ground heat exchanger 1.
As shown in fig. 1, a first valve 4 and a first circulating pump 5 are further arranged between the cold fluid inlet of the high-low pressure heat exchanger 2 and the first fluid outlet of the ground heat exchanger 1, one end of the first valve 4 is communicated with the first fluid outlet of the ground heat exchanger 1 through a pipeline, the other end of the first valve 4 is communicated with the inlet of the first circulating pump 5, and the outlet of the first circulating pump 5 is communicated with the cold fluid inlet of the high-low pressure heat exchanger 2.
As shown in fig. 1 to 5, the surface mine waste heat utilization loop comprises a heat pump unit 6 and a refrigeration loop 7, the heat pump unit 6 comprises a heat pump unit compressor 6-1, a heat pump unit evaporator 6-2, a heat pump unit throttling mechanism 6-3 and a heat pump unit condenser 6-4, the heat pump unit throttling mechanism 6-3 is an expansion valve, the outlet of the heat pump unit compressor 6-1 is communicated with the working medium inlet of the heat pump unit evaporator 6-2, the working medium outlet of the heat pump unit evaporator 6-2 is communicated with the inlet of the heat pump unit throttling mechanism 6-3, the outlet of the heat pump unit throttling mechanism 6-3 is communicated with the working medium inlet of the heat pump unit condenser 6-4, the working medium outlet of the heat pump unit condenser 6-4 is communicated with the inlet of the heat pump unit compressor 6-1;
the refrigeration loop 7 comprises a refrigeration loop compressor 7-1, a refrigeration loop evaporator 7-2, a refrigeration loop throttling device 7-3, a refrigeration loop condenser 7-4 and a cold load 7-5, the refrigeration loop throttling device 7-3 is an expansion valve, an outlet of the refrigeration loop compressor 7-1 is communicated with a working medium inlet of the refrigeration loop evaporator 7-2, a working medium outlet of the refrigeration loop evaporator 7-2 is communicated with an inlet of the refrigeration loop throttling device 7-3, an outlet of the refrigeration loop throttling device 7-3 is communicated with a working medium inlet of the refrigeration loop condenser 7-4, a working medium outlet of the refrigeration loop condenser 7-4 is communicated with an inlet of the refrigeration loop compressor 7-1, one end of the cold load 7-5 is communicated with a load medium inlet of the refrigeration loop evaporator 7-2, and the other end of the cold load 7-5 is communicated with a load medium outlet of the refrigeration loop evaporator 7-2;
the load medium outlet of the heat pump unit evaporator 6-2 is communicated with the load medium inlet of the refrigeration loop condenser 7-4, the load medium inlet of the heat pump unit evaporator 6-2 is communicated with the load medium outlet of the refrigeration loop condenser 7-4, the load medium outlet of the heat pump unit condenser 6-4 is communicated with the second fluid inlet of the buried pipe heat exchanger 1, and the load medium inlet of the heat pump unit condenser 6-4 is communicated with the second fluid outlet of the buried pipe heat exchanger 1.
As shown in fig. 1 and 3, the ground surface mine waste heat utilization loop further comprises a heating loop 8, the heating loop 8 comprises a second circulating pump 8-1, a second valve 8-2, a heat load 8-3 and a third valve 8-4, an outlet of the second circulating pump 8-1 is communicated with one end of the second valve 8-2, the other end of the second valve 8-2 is communicated with one end of the heat load 8-3, the other end of the heat load 8-3 is communicated with one end of the third valve 8-4, the other end of the third valve 8-4 is communicated with a load medium inlet of a heat pump unit condenser 6-4, a load medium outlet of the heat pump unit condenser 6-4 is communicated with an inlet of the second circulating pump 8-1, and a load medium outlet of the heat pump unit evaporator 6-2 is communicated with a second fluid inlet of the buried pipe heat exchanger 1 And a load medium inlet of the heat pump unit evaporator 6-2 is communicated with a second fluid outlet of the ground heat exchanger 1.
As shown in fig. 1 and 4, the surface mine waste heat utilization loop further includes a domestic hot water loop 9, the domestic hot water loop 9 includes a hot water heating load 9-1, a third circulating pump 9-2 and a fourth valve 9-3, an outlet of the third circulating pump 9-2 is communicated with one end of the fourth valve 9-3, the other end of the fourth valve 9-3 is communicated with a load medium inlet of a heat pump unit condenser 6-4, a load medium outlet of the heat pump unit condenser 6-4 is communicated with one end of the hot water heating load 9-1, the other end of the hot water heating load 9-1 is communicated with an inlet of the third circulating pump 9-2, a load medium outlet of the heat pump unit evaporator 6-2 is communicated with a second fluid inlet of the buried pipe heat exchanger 1, and a load medium inlet of the heat pump unit evaporator 6-2 is communicated with a second fluid outlet of the ground heat exchanger 1.
As shown in fig. 1, the heat pump unit 6 further includes a cooling tower 6-5, a water outlet of the cooling tower 6-5 is communicated with a load medium inlet of a heat pump unit condenser 6-4, and a load medium outlet of the heat pump unit condenser 6-4 is communicated with a water inlet of the cooling tower 6-5.
As shown in figure 1, a fourth circulating pump 6-6 and a fifth valve 6-7 are arranged between a load medium outlet of a heat pump unit condenser 6-4 and a cooling tower 6-5 water inlet, an outlet of the fourth circulating pump 6-6 is communicated with one end of the fifth valve 6-7, the other end of the fifth valve 6-7 is communicated with a cooling tower 6-5 water inlet, and an inlet of the fourth circulating pump 6-6 is communicated with a load medium outlet of the heat pump unit condenser 6-4.
As shown in fig. 1, a sixth circulation pump 7-6 and a seventh valve 7-7 are further disposed between one end of the cold load 7-5 and the load medium inlet of the refrigeration circuit evaporator 7-2, an outlet of the sixth circulation pump 7-6 is communicated with one end of the seventh valve 7-7, the other end of the seventh valve 7-7 is communicated with the load medium inlet of the refrigeration circuit evaporator 7-2, and one end of the cold load 7-5 is communicated with an inlet of the sixth circulation pump 7-6.
The utility model discloses a theory of operation does: the system provides a refrigeration working process for an earth surface mine waste heat utilization loop: opening a seventh valve 7-7 and a sixth circulating pump 7-6, connecting a cold load 7-5 with a load medium end of a refrigeration loop evaporator 7-2 to form a first closed loop, sequentially connecting a working medium end of a refrigeration loop compressor 7-1, the refrigeration loop evaporator 7-2, a refrigeration loop throttling device 7-3 and a refrigeration loop condenser 7-4 to form a second closed loop, connecting a load medium end of the refrigeration loop condenser 7-4 with a load medium end of a heat pump unit evaporator 6-2 to form a third closed loop, transferring heat from the cold load 7-5 to the second closed loop by the first closed loop, transferring the heat to the third closed loop by the second closed loop, transferring the heat to the ground heat exchanger 1 by the third closed loop through the heat pump unit 6, the borehole heat exchanger 1 stores this heat in the surface soil.
The system is a work flow of supplying heat for an earth surface mine waste heat utilization loop: the first valve 4 and the first circulating pump 5 are opened, the high-low pressure heat exchanger 2 transfers heat absorbed from the mine ventilation system 3 to the ground heat exchanger 1, the ground heat exchanger 1 rotates the heat to the heat pump unit 6, and the heat pump unit 6 transfers the heat to the hot water heating load 9-1 andor the heat load 8-3 after converting the heat.
In non-heating seasons, the situation of large mine cooling load can occur, at the moment, the heat discharge amount of the cooling system exceeds the heat storage capacity of earth surface soil, the cooling towers 6-5 can be started for auxiliary heat dissipation, and the safe and efficient operation of the heat pump unit 6 is ensured. At the moment, starting an auxiliary heat dissipation working process of the cooling tower 6-5: and opening the fourth circulating pump 6-6 and the fifth valve 6-7 to enable the cooling tower 6-5 to exchange heat with the condensation side of the heat pump unit to achieve the cooling effect, and adjusting the opening degrees of the fifth valve 6-7 and the sixth valve 1-2 to adjust the flow of the heat storage and cooling tower 6-5 for auxiliary heat dissipation.
In the heating season, the working process of the deep well system is the same as that in the non-heating season. And opening a second circulating pump 8-1, a second valve 8-2 and a third valve 8-4 on the ground to form a loop, and performing heat exchange with the condensation detector of the heat pump unit 6 to supply heat to the residential area. And a third circulating pump 9-2 and a fourth valve 9-3 are opened to form a loop, and the loop exchanges heat with the condenser side of the heat pump unit 6 and is used for supplying hot water to a residential area. And opening a fifth circulating pump 1-1, a sixth valve 1-2 and a three-way reversing valve 1-3, so that the evaporation side of the heat pump unit 6 and the ground heat exchanger 1 form a loop for extracting heat stored on the ground surface in non-heating seasons. The remaining valves and pumps are closed. At this point, the heat stored on the surface of the earth during non-heating seasons is transferred to the residential area through the loop.
The deep well cooling load is reduced in the heating season, and the heat pump system mainly meets the requirements of domestic hot water and domestic heating of the residential buildings in the mining areas. According to the requirements of heat supply load and hot water load of the residence in the mining area, all or part of heat of the deep well ventilation loop is used for a ground heat supply system through a heat pump unit, and the heat stored on the ground surface in non-heating seasons is extracted by the buried pipe heat exchanger to implement heat supply heat pump circulation of the residence in winter.
The secondary refrigerant of the evaporator of the heat pump unit adopts ethylene glycol aqueous solution, the circulating medium at the side of the condenser is water, and the heat pump unit is arranged on the ground. The system can realize functions of underground perennial cooling, ground summer cooling, winter heating, perennial hot water supply and the like through switching of the valve.
By utilizing the heat pump technology, the low-grade heat energy under the mine is stored on the earth surface and extracted when needed. The system reduces the environmental pollution caused by long-term heat supply in winter in the traditional mining area in the cold area in the north of China and the consumption of large-scale non-renewable resources, during the use of the system, the operating cost of the system is far lower than the fuel use cost and the equipment maintenance cost of the traditional heat supply equipment, the heat supply cost is greatly saved, meanwhile, the system can effectively reduce the temperature of the working surface of the deep well to the standard working temperature, the working environment is improved, a hot water supply system is added, the life quality is improved, the cost of extra cost caused by the improvement of the life and the working environment of miners is reduced, and the system has great economic benefit. The system improves the problem of high-temperature thermal damage and heat recycling in the traditional mining area, fully utilizes geothermal energy and embodies the air conditioning concept of sustainable development.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent structure transform that the above embodiment was done the utility model discloses technical scheme's within the scope of protection.
Claims (9)
1. A mine waste heat and soil source hybrid heat pump system is characterized by comprising an earth surface mine waste heat utilization loop, a ground heat exchanger (1) and a deep well waste heat collection loop, wherein the deep well waste heat collection loop is connected with the ground heat exchanger (1) and is used for recovering underground waste heat and transmitting the underground waste heat to the ground heat exchanger (1), the ground heat exchanger (1) is connected with the earth surface mine waste heat utilization loop and is used for transmitting energy absorbed and stored by the ground heat exchanger (1) to the earth surface mine waste heat utilization loop, the deep well waste heat collection loop comprises a high-low pressure heat exchanger (2) and a mine ventilation system (3), the high-low pressure heat exchanger (2) is arranged at the tail end of the mine ventilation system (3) and is used for absorbing the underground waste heat of air from a stope zone in the mine ventilation system (3), and a cold fluid inlet of the high-low pressure heat exchanger (2) is communicated with a first fluid outlet of the buried pipe heat exchanger (1), a cold fluid outlet of the high-low pressure heat exchanger (2) is communicated with the first fluid inlet of the buried pipe heat exchanger (1), and a second fluid inlet and an outlet of the buried pipe heat exchanger (1) are communicated with an earth surface mine waste heat utilization loop.
2. The mine waste heat soil source hybrid heat pump system of claim 1, wherein: a fifth circulating pump (1-1), a sixth valve (1-2) and a three-way reversing valve (1-3) are arranged between a second fluid outlet of the ground heat exchanger (1) and the ground surface mine waste heat utilization loop, an outlet of the fifth circulating pump (1-1) is communicated with one end of the sixth valve (1-2), one end of the sixth valve (1-2) is communicated with a first port of the three-way reversing valve (1-3), a second port and a third port of the three-way reversing valve (1-3) are both communicated with the mine ground surface waste heat utilization loop, and an inlet of the fifth circulating pump (1-1) is communicated with a second fluid outlet of the ground heat exchanger (1).
3. The mine waste heat soil source hybrid heat pump system of claim 1, wherein: still be provided with first valve (4) and first circulating pump (5) between the cold fluid entry of high-low pressure heat exchanger (2) and the first fluid export of ground heat exchanger (1), the one end of first valve (4) is linked together through the first fluid export of pipeline with ground heat exchanger (1), the other end of first valve (4) is linked together with the entry of first circulating pump (5), the export of first circulating pump (5) is linked together with the cold fluid entry of high-low pressure heat exchanger (2).
4. The mine waste heat soil source hybrid heat pump system of claim 1, wherein: the surface mine waste heat utilization loop comprises a heat pump unit (6) and a refrigeration loop (7), the heat pump unit (6) comprises a heat pump unit compressor (6-1), a heat pump unit evaporator (6-2), a heat pump unit throttling mechanism (6-3) and a heat pump unit condenser (6-4), the outlet of the heat pump unit compressor (6-1) is communicated with the working medium inlet of the heat pump unit evaporator (6-2), the working medium outlet of the heat pump unit evaporator (6-2) is communicated with the inlet of the heat pump unit throttling mechanism (6-3), the outlet of the heat pump unit throttling mechanism (6-3) is communicated with the working medium inlet of the heat pump unit condenser (6-4), the working medium outlet of the heat pump unit condenser (6-4) is communicated with the inlet of the heat pump unit compressor (6-1); the refrigeration loop (7) comprises a refrigeration loop compressor (7-1), a refrigeration loop evaporator (7-2), a refrigeration loop throttling device (7-3), a refrigeration loop condenser (7-4) and a cold load (7-5), an outlet of the refrigeration loop compressor (7-1) is communicated with a working medium inlet of the refrigeration loop evaporator (7-2), a working medium outlet of the refrigeration loop evaporator (7-2) is communicated with an inlet of the refrigeration loop throttling device (7-3), an outlet of the refrigeration loop throttling device (7-3) is communicated with a working medium inlet of the refrigeration loop condenser (7-4), a working medium outlet of the refrigeration loop condenser (7-4) is communicated with an inlet of the refrigeration loop compressor (7-1), one end of the cold load (7-5) is communicated with a load medium inlet of the refrigeration loop evaporator (7-2), and the other end of the cold load (7-5) is communicated with a load medium outlet of the refrigeration loop evaporator (7-2); the load medium outlet of the heat pump unit evaporator (6-2) is communicated with the load medium inlet of the refrigeration loop condenser (7-4), the load medium inlet of the heat pump unit evaporator (6-2) is communicated with the load medium outlet of the refrigeration loop condenser (7-4), the load medium outlet of the heat pump unit condenser (6-4) is communicated with the second fluid inlet of the buried pipe heat exchanger (1), and the load medium inlet of the heat pump unit condenser (6-4) is communicated with the second fluid outlet of the buried pipe heat exchanger (1).
5. The mine waste heat soil source hybrid heat pump system according to claim 4, wherein: the ground surface mine waste heat utilization loop further comprises a heating loop (8), the heating loop (8) comprises a second circulating pump (8-1), a second valve (8-2), a heat load (8-3) and a third valve (8-4), an outlet of the second circulating pump (8-1) is communicated with one end of the second valve (8-2), the other end of the second valve (8-2) is communicated with one end of the heat load (8-3), the other end of the heat load (8-3) is communicated with one end of the third valve (8-4), the other end of the third valve (8-4) is communicated with a load medium inlet of a heat pump unit condenser (6-4), a load medium outlet of the heat pump unit condenser (6-4) is communicated with an inlet of the second circulating pump (8-1), and a load medium outlet of the heat pump unit evaporator (6-2) is communicated with a second fluid inlet of the ground heat exchanger (1), and a load medium inlet of the heat pump unit evaporator (6-2) is communicated with a second fluid outlet of the ground heat exchanger (1).
6. The mine waste heat soil source hybrid heat pump system according to claim 4 or 5, wherein: the ground surface mine waste heat utilization loop further comprises a domestic hot water loop (9), the domestic hot water loop (9) comprises a hot water heating load (9-1), a third circulating pump (9-2) and a fourth valve (9-3), an outlet of the third circulating pump (9-2) is communicated with one end of the fourth valve (9-3), the other end of the fourth valve (9-3) is communicated with a load medium inlet of a heat pump unit condenser (6-4), a load medium outlet of the heat pump unit condenser (6-4) is communicated with one end of the hot water heating load (9-1), the other end of the hot water heating load (9-1) is communicated with an inlet of the third circulating pump (9-2), a load medium outlet of the heat pump unit evaporator (6-2) is communicated with a second fluid inlet of the ground buried pipe heat exchanger (1), and a load medium inlet of the heat pump unit evaporator (6-2) is communicated with a second fluid outlet of the ground heat exchanger (1).
7. The mine waste heat soil source hybrid heat pump system according to claim 4, wherein: the heat pump unit (6) further comprises a cooling tower (6-5), a water outlet of the cooling tower (6-5) is communicated with a load medium inlet of a heat pump unit condenser (6-4), and a load medium outlet of the heat pump unit condenser (6-4) is communicated with a water inlet of the cooling tower (6-5).
8. The mine waste heat soil source hybrid heat pump system of claim 7, wherein: a fourth circulating pump (6-6) and a fifth valve (6-7) are arranged between a load medium outlet of the heat pump unit condenser (6-4) and a water inlet of the cooling tower (6-5), an outlet of the fourth circulating pump (6-6) is communicated with one end of the fifth valve (6-7), the other end of the fifth valve (6-7) is communicated with a water inlet of the cooling tower (6-5), and an inlet of the fourth circulating pump (6-6) is communicated with a load medium outlet of the heat pump unit condenser (6-4).
9. The mine waste heat soil source hybrid heat pump system according to claim 4, wherein: a sixth circulating pump (7-6) and a seventh valve (7-7) are further arranged between one end of the cold load (7-5) and the load medium inlet of the refrigeration loop evaporator (7-2), the outlet of the sixth circulating pump (7-6) is communicated with one end of the seventh valve (7-7), the other end of the seventh valve (7-7) is communicated with the load medium inlet of the refrigeration loop evaporator (7-2), and one end of the cold load (7-5) is communicated with the inlet of the sixth circulating pump (7-6).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110173932A (en) * | 2019-06-17 | 2019-08-27 | 西安科技大学 | A kind of mine waste heat soil source hybrid current limiter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110173932A (en) * | 2019-06-17 | 2019-08-27 | 西安科技大学 | A kind of mine waste heat soil source hybrid current limiter |
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